Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufm.p11a..11r&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #P11A-11
Physics
5418 Heat Flow, 5464 Remote Sensing, 5480 Volcanism (8450), 6218 Jovian Satellites, 8450 Planetary Volcanism (5480)
Scientific paper
The Galileo Photopolarimeter-Radiometer instrument has continued its temperature mapping of Io during I31 (August 2001) and, hopefully, in I32 (November 2001). Highlights of the successful I31 flyby include the first high resolution scan of Loki Patera, an active hotspot, since I27 (February 2001), the first high resolution scan of the high-latitude hotspot Lei-Kung Fluctus, the first nighttime global and regional maps since I27, and the first high resolution daytime global map. Previous global nighttime maps showed Lei-Kung Fluctus to be a large area of elevated temperature unlike the point source signatures of most hotspots. Global and Region resolution temperature maps are also particularly useful in determining Io's heat flow. Daytime temperatures will be used to constrain thermal inertias and thereby remove the passive component to the heat flow. Further, previous global maps did not show the expected decrease in nighttime background temperature with increasing latitude expected for solar heating. The higher resolution scans of high-latitude regions may give insight into the reason for this.
Barnard Laura
Martin Terry. Z.
Rathbun Julie A.
Spencer John Robert
Tamppari Leslie K.
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